Cremona's table of elliptic curves

20280 = 2³ · 3 · 5 · 13²

Class	r	Atkin-Lehner	Eigenvalues
20280a (6 curves)	1	2+ 3+ 5+ 13+	2+ 3+ 5+  0  4 13+  2  4
Curve Equation t Generators 20280a1 [0,-1,0,-1570911,820737540] 2 [-11446:93795:8] 20280a2 [0,-1,0,-25704956,50170032756] 4 [870849002898:86865425400:296740963] 20280a3 [0,-1,0,-26276176,47824146460] 4 [-704973688570099:23097555389875842:130246743509] 20280a4 [0,-1,0,-411278456,3210484668156] 2 [142714862:47147620:12167] 20280a5 [0,-1,0,-90340696,-275906686004] 2 [-5046983524637216992840893155:-110373436553903859514421020578:738652381508949335396333] 20280a6 [0,-1,0,28648824,221409116460] 2 [-45364548546644138319003665978523:-2398377059569958486910446730242034:11396667002422188966724157093]
20280b (1 curve)	1	2+ 3+ 5+ 13+	2+ 3+ 5+ -1  1 13+  0 -1
Curve Equation t Generators 20280b1 [0,-1,0,-27096,-6479604] 1 [3739281:153394272:2197]
20280c (1 curve)	1	2+ 3+ 5+ 13+	2+ 3+ 5+  3 -2 13+ -4  4
Curve Equation t Generators 20280c1 [0,-1,0,-38081,-37226619] 1 [621:13350:1]
20280d (4 curves)	1	2+ 3+ 5+ 13+	2+ 3+ 5+ -4 -4 13+  6  0
Curve Equation t Generators 20280d1 [0,-1,0,-3436,276340] 2 [126:1352:1] 20280d2 [0,-1,0,-87936,10044540] 4 [9:3042:1] 20280d3 [0,-1,0,-121736,1648620] 2 [-31:2322:1] 20280d4 [0,-1,0,-1406136,642253260] 2 [5498:831:8]
20280e (1 curve)	1	2+ 3+ 5+ 13+	2+ 3+ 5+  5 -1 13+ -3 -6
Curve Equation t Generators 20280e1 [0,-1,0,-58361,-5407299] 1 [1153:38194:1]
20280f (2 curves)	0	2+ 3+ 5+ 13-	2+ 3+ 5+ -2  4 13- -2  6
Curve Equation t 20280f1 [0,-1,0,-58231,4833100] 2 20280f2 [0,-1,0,83924,24621076] 2
20280g (4 curves)	0	2+ 3+ 5- 13+	2+ 3+ 5-  0  0 13+ -6 -4
Curve Equation t 20280g1 [0,-1,0,28505,114100] 2 20280g2 [0,-1,0,-114300,1028052] 4 20280g3 [0,-1,0,-1212800,-511751748] 2 20280g4 [0,-1,0,-1300680,570015900] 4
20280h (1 curve)	0	2+ 3+ 5- 13+	2+ 3+ 5- -1 -2 13+  6  8
Curve Equation t 20280h1 [0,-1,0,-723545,-236696643] 1
20280i (2 curves)	1	2+ 3+ 5- 13-	2+ 3+ 5- -2  0 13-  6 -2
Curve Equation t Generators 20280i1 [0,-1,0,-95,-300] 2 [-5:5:1] 20280i2 [0,-1,0,100,-1548] 2 [22:104:1]
20280j (2 curves)	1	2+ 3+ 5- 13-	2+ 3+ 5-  4  4 13- -8  0
Curve Equation t Generators 20280j1 [0,-1,0,-3280,-157028] 2 [234:3440:1] 20280j2 [0,-1,0,-68280,-6839028] 2 [2522:13545:8]
20280k (6 curves)	0	2+ 3- 5+ 13+	2+ 3- 5+  0  4 13+ -6  4
Curve Equation t 20280k1 [0,1,0,-2591,49830] 2 20280k2 [0,1,0,-3436,13664] 4 20280k3 [0,1,0,-33856,-2395600] 4 20280k4 [0,1,0,13464,121824] 2 20280k5 [0,1,0,-540856,-153278800] 2 20280k6 [0,1,0,-13576,-5218576] 2
20280l (1 curve)	0	2+ 3- 5+ 13+	2+ 3- 5+  2  1 13+  6 -6
Curve Equation t 20280l1 [0,1,0,-27096,-2774160] 1
20280m (2 curves)	0	2+ 3- 5- 13-	2+ 3- 5-  0  6 13- -2  2
Curve Equation t 20280m1 [0,1,0,-160,560] 2 20280m2 [0,1,0,360,3888] 2
20280n (1 curve)	0	2+ 3- 5- 13-	2+ 3- 5-  3 -3 13-  1  8
Curve Equation t 20280n1 [0,1,0,-284145,-58896525] 1
20280o (1 curve)	0	2- 3+ 5+ 13+	2- 3+ 5+  1  2 13+  6 -8
Curve Equation t 20280o1 [0,-1,0,-4281,-106419] 1
20280p (2 curves)	0	2- 3+ 5+ 13+	2- 3+ 5+ -2 -4 13+  0 -2
Curve Equation t 20280p1 [0,-1,0,121624,-17309124] 2 20280p2 [0,-1,0,-723376,-165691124] 2
20280q (2 curves)	1	2- 3+ 5+ 13-	2- 3+ 5+  2  0 13-  6  2
Curve Equation t Generators 20280q1 [0,-1,0,-16111,-723464] 2 [-59:135:1] 20280q2 [0,-1,0,16844,-3333500] 2 [2138:99000:1]
20280r (2 curves)	1	2- 3+ 5+ 13-	2- 3+ 5+ -4 -4 13- -8  0
Curve Equation t Generators 20280r1 [0,-1,0,-554376,-347207940] 2 [15793115734:58488729533:16387064] 20280r2 [0,-1,0,-11539376,-15071501940] 2 [13778659148579598:-8523679236353583999:36002379608]
20280s (4 curves)	1	2- 3+ 5- 13+	2- 3+ 5-  0 -4 13+ -2  4
Curve Equation t Generators 20280s1 [0,-1,0,14140,452100] 4 [60:1230:1] 20280s2 [0,-1,0,-70360,4068700] 4 [41386:2972541:8] 20280s3 [0,-1,0,-509760,-137066580] 2 [1121262:-79969967:216] 20280s4 [0,-1,0,-982960,375314380] 2 [21101289:-17715034:35937]
20280t (1 curve)	1	2- 3+ 5- 13+	2- 3+ 5-  1 -1 13+  0  1
Curve Equation t Generators 20280t1 [0,-1,0,-160,-2900] 1 [25:90:1]
20280u (1 curve)	1	2- 3+ 5- 13+	2- 3+ 5- -3  2 13+ -4 -4
Curve Equation t Generators 20280u1 [0,-1,0,-225,-16875] 1 [35:130:1]
20280v (2 curves)	0	2- 3+ 5- 13-	2- 3+ 5-  2 -4 13- -2 -6
Curve Equation t 20280v1 [0,-1,0,-9841095,10578956400] 2 20280v2 [0,-1,0,14183100,54149236452] 2
20280w (2 curves)	1	2- 3- 5+ 13+	2- 3- 5+  2  0 13+ -4 -6
Curve Equation t Generators 20280w1 [0,1,0,-56,105600] 2 [-150:2535:8] 20280w2 [0,1,0,-33856,2349920] 2 [4855:130806:125]
20280x (1 curve)	1	2- 3- 5+ 13+	2- 3- 5+  3  3 13+ -1  6
Curve Equation t Generators 20280x1 [0,1,0,-17801,1395915] 1 [121:1014:1]
20280y (4 curves)	1	2- 3- 5+ 13+	2- 3- 5+ -4  0 13+  2  0
Curve Equation t Generators 20280y1 [0,1,0,-387911,-78529086] 4 [-269:2535:1] 20280y2 [0,1,0,-5931956,-5562698400] 4 [6712:507000:1] 20280y3 [0,1,0,-94910456,-355924440000] 2 [11275:86190:1] 20280y4 [0,1,0,-5658176,-6099088176] 2 [53642:4059375:8]
20280z (2 curves)	0	2- 3- 5+ 13-	2- 3- 5+  0 -6 13- -2 -2
Curve Equation t 20280z1 [0,1,0,-27096,1338624] 2 20280z2 [0,1,0,60784,8298720] 2
20280ba (1 curve)	0	2- 3- 5+ 13-	2- 3- 5+ -3  3 13-  1 -8
Curve Equation t 20280ba1 [0,1,0,-1681,-27325] 1
20280bb (4 curves)	0	2- 3- 5- 13+	2- 3- 5-  0  0 13+  2  0
Curve Equation t 20280bb1 [0,1,0,-824100,287676000] 4 20280bb2 [0,1,0,-827480,285193728] 4 20280bb3 [0,1,0,-1672480,-396890272] 2 20280bb4 [0,1,0,-36560,808466400] 2
20280bc (1 curve)	0	2- 3- 5- 13+	2- 3- 5-  1  5 13+  3  6
Curve Equation t 20280bc1 [0,1,0,1642455,533705355] 1
20280bd (1 curve)	0	2- 3- 5- 13+	2- 3- 5- -2 -1 13+  6  6
Curve Equation t 20280bd1 [0,1,0,-160,-1312] 1
20280be (4 curves)	0	2- 3- 5- 13+	2- 3- 5-  4 -4 13+ -6  0
Curve Equation t 20280be1 [0,1,0,-18815,984738] 4 20280be2 [0,1,0,-26420,105600] 4 20280be3 [0,1,0,-279920,-56881200] 2 20280be4 [0,1,0,105400,949248] 2
20280bf (4 curves)	0	2- 3- 5- 13+	2- 3- 5- -4  0 13+ -2 -4
Curve Equation t 20280bf1 [0,1,0,620,-2560] 2 20280bf2 [0,1,0,-2760,-24192] 4 20280bf3 [0,1,0,-36560,-2701152] 2 20280bf4 [0,1,0,-23040,1322400] 2

Data from Elliptic Curve Data by J. E. Cremona.
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